It is during the latter stages of the production of an animal oocyte that many functionalities of what some disparage as “junk DNA” take center stage.
In the words of Robert Rosen we have to “drastically reconsider what is meant by “genetic information.’”
Let us give some thought to the Y chromosome of Drosophila melanogaster, that engaging fly which is the bond-servant of genetics.
MagiMold� works because of prions, special proteins that allow a cell to evolve before its DNA does.
Earlier today I criticized Calvin College biologist Steve Matheson’s incorrect view of “junk” DNA. Matheson had argued in February that the human genome contains about 190,000 introns (stretches of non-protein-coding DNA that interrupt protein-coding genes), of which “only a handful” had important functional roles. “How many? Oh, probably a dozen,” he wrote, “but let’s be really generous. Let’s say that a hundred introns in the human genome are known to have ‘important functional roles.’ Oh fine, let’s make it a thousand.” On the contrary, I pointed out that at least 90% of genes are alternatively spliced, meaning that 0.9 x 190,000 = 171,000 introns are involved in alternative splicing, an essential process that helps to ensure that the proper proteins Read More ›